Improve topics layout management.

Telegram/Resources/langs/lang.strings

@@ -2078,6 +2078,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_action_changed_title" = "{from} changed group name to «{title}»";
 "lng_action_changed_title_channel" = "Channel name was changed to «{title}»";
 "lng_action_created_chat" = "{from} created the group «{title}»";
+"lng_action_created_monoforum" = "Direct messages were enabled in this channel.";
 "lng_action_ttl_changed" = "{from} set messages to auto-delete in {duration}";
 "lng_action_ttl_changed_you" = "You set messages to auto-delete in {duration}";
 "lng_action_ttl_changed_channel" = "Messages in this channel will be automatically deleted after {duration}";

Telegram/SourceFiles/boxes/peers/edit_peer_info_box.cpp

@@ -1087,7 +1087,7 @@ void Controller::fillDirectMessagesButton() {
 		tr::lng_manage_monoforum(),
 		std::move(label),
 		[=] { showEditDirectMessagesBox(); },
-		{ &st::menuIconChatBubble });
+		{ .icon = &st::menuIconChatBubble, .newBadge = true });
 }
 //
 //void Controller::fillInviteLinkButton() {
@@ -1127,7 +1127,7 @@ void Controller::fillForumButton() {
 			changes->events_starting_with({}) | rpl::map(label),
 			[] {},
 			st::manageGroupTopicsButton,
-			{ &st::menuIconTopics }));
+			{ .icon = &st::menuIconTopics, .newBadge = true }));
 
 	button->setClickedCallback(crl::guard(this, [=] {
 		if (!*_forumSavedValue && _controls.forumToggleLocked) {

Telegram/SourceFiles/boxes/peers/toggle_topics_box.cpp

@@ -81,6 +81,7 @@ LayoutButton::LayoutButton(
 	const auto icon = iconWidget.release();
 	setClickedCallback([=] {
 		group->setValue(type);
+		iconAnimate(anim::repeat::once);
 	});
 	group->value() | rpl::start_with_next([=](LayoutType value) {
 		const auto active = (value == type);
@@ -93,9 +94,6 @@ LayoutButton::LayoutButton(
 		}
 		_active = active;
 		_text.update();
-		if (_active) {
-			iconAnimate(anim::repeat::once);
-		}
 		_activeAnimation.start([=] {
 			icon->update();
 		}, _active ? 0. : 1., _active ? 0. : 1., st::fadeWrapDuration);
@@ -170,6 +168,10 @@ void ToggleTopicsBox(
 			st::settingsButtonNoIcon));
 	toggle->toggleOn(rpl::single(enabled));
 
+	Ui::AddSkip(container);
+	Ui::AddDivider(container);
+	Ui::AddSkip(container);
+
 	const auto group = std::make_shared<Ui::RadioenumGroup<LayoutType>>(tabs
 		? LayoutType::Tabs
 		: LayoutType::List);

Telegram/SourceFiles/dialogs/ui/dialogs_topics_view.cpp

@@ -110,6 +110,7 @@ void TopicsView::prepare(MsgId frontRootId, Fn<void()> customEmojiRepaint) {
 			_jumpToTopic = false;
 		}
 	}
+	_allLoaded = _forum->topicsList()->loaded();
 }
 
 void TopicsView::prepare(PeerId frontPeerId, Fn<void()> customEmojiRepaint) {
@@ -182,6 +183,7 @@ void TopicsView::prepare(PeerId frontPeerId, Fn<void()> customEmojiRepaint) {
 			_jumpToTopic = false;
 		}
 	}
+	_allLoaded = _monoforum->chatsList()->loaded();
 }
 
 int TopicsView::jumpToTopicWidth() const {
@@ -207,10 +209,13 @@ void TopicsView::paint(
 	rect.setWidth(rect.width() - _lastTopicJumpGeometry.rightCut);
 	auto skipBig = _jumpToTopic && !context.active;
 	if (_titles.empty()) {
+		const auto text = (_monoforum && _allLoaded)
+			? tr::lng_filters_no_chats(tr::now)
+			: tr::lng_contacts_loading(tr::now);
 		p.drawText(
 			rect.x(),
 			rect.y() + st::normalFont->ascent,
-			tr::lng_contacts_loading(tr::now));
+			text);
 		return;
 	}
 	for (const auto &title : _titles) {

Telegram/SourceFiles/dialogs/ui/dialogs_topics_view.h

@@ -121,6 +121,7 @@ private:
 	JumpToLastGeometry _lastTopicJumpGeometry;
 	int _version = -1;
 	bool _jumpToTopic = false;
+	bool _allLoaded = false;
 
 	rpl::lifetime _lifetime;
 

Telegram/SourceFiles/history/history_item.cpp

@@ -4632,20 +4632,30 @@ void HistoryItem::setServiceMessageByAction(const MTPmessageAction &action) {
 
 	auto prepareChatCreate = [this](const MTPDmessageActionChatCreate &action) {
 		auto result = PreparedServiceText();
-		result.links.push_back(fromLink());
-		result.text = tr::lng_action_created_chat(
-			tr::now,
-			lt_from,
-			fromLinkText(), // Link 1.
-			lt_title,
-			{ .text = qs(action.vtitle()) },
-			Ui::Text::WithEntities);
+		if (_history->peer->isMonoforum()) {
+			result.text = tr::lng_action_created_monoforum(
+				tr::now,
+				Ui::Text::WithEntities);
+		} else {
+			result.links.push_back(fromLink());
+			result.text = tr::lng_action_created_chat(
+				tr::now,
+				lt_from,
+				fromLinkText(), // Link 1.
+				lt_title,
+				{ .text = qs(action.vtitle()) },
+				Ui::Text::WithEntities);
+		}
 		return result;
 	};
 
 	auto prepareChannelCreate = [this](const MTPDmessageActionChannelCreate &action) {
 		auto result = PreparedServiceText();
-		if (isPost()) {
+		if (_history->peer->isMonoforum()) {
+			result.text = tr::lng_action_created_monoforum(
+				tr::now,
+				Ui::Text::WithEntities);
+		} else if (isPost()) {
 			result.text = tr::lng_action_created_channel(
 				tr::now,
 				Ui::Text::WithEntities);

Telegram/SourceFiles/history/view/history_view_top_bar_widget.cpp

@@ -1695,7 +1695,9 @@ void TopBarWidget::updateOnlineDisplay() {
 	} else if (const auto monoforum = peer->monoforum()) {
 		const auto chats = monoforum->chatsList();
 		const auto count = chats->fullSize().current();
-		text = tr::lng_filters_chats_count(tr::now, lt_count, count);
+		text = (count > 0)
+			? tr::lng_filters_chats_count(tr::now, lt_count, count)
+			: tr::lng_filters_no_chats(tr::now);
 	} else if (peer->isMonoforum()) {
 		text = tr::lng_chat_status_direct(tr::now);
 	} else if (const auto channel = peer->asChannel()) {